Magnetic Absorber, Portable Design, Headphone Head Magnetic Design Is Not Entangled For Good Storage, Wearing Light Fashion Is Not Easy To Lose The Neck Hanger Is Preferably Made Of Liquid Silicone, Which Is As Smooth As Baby Skin, Warm And Comfortable, And Can Be Bent At Will Biodiaphragm, Stereo Surround Heavy Bass, With Heavy Bass In Line With Diaphragm Speaker, Efficient Bluetooth Transmission Efficiency, Richer Details And Layers Not Only Appearance, But Also Artwork, Ingenuity Quality, Enhance Your , New Appearance Design Life-Level Waterproof, All-Round Protection, Even If Sweating Profusely, There Is No Harm To The Headphones, Anti-Stain Erosion Long-Term Durability, No Fear Of Sweat And Rain Whether It Is Single Or Binaural: Bilateral Stereo Bluetooth Protocol:5.2 Battery Life:4 (Hours) Waterproof Performance:Ipx5 Transmission Range:10 Meters Frequency Response Range:20hz-20khz Horn Impedance:32ohm Battery Capacity:280mah Continuous Playback Time:8 Hours Charging Time:2 Hours Standby Time:About 300 Hours Colour:Black Material:plastic Size:7.5x6.5x1.3cm Package Contents: 1 * Earphone ( Ear Cap Color: Gray Red ) 1 * Instruction Manual In Chinese And English 1 * Charging Cable Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.